It is believed that the poison used in the attack could have been puffer fish poison.

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A video showed North Korean Kim Han-Sol, Kim Jong-Il’s teenage grandson, talking to former UN under secretary general and special rapporteur for Human Rights in 2012

Four people have already been arrested by authorities in Malaysia over the assassination, with one woman who was wearing a top with the slogan ‘LOL’ emblazoned on it revealed to be an entertainment worker.

The suspected female assassin held over the death reportedly claimed she thought she was “playing a prank”.

Another woman, a masseuse, is being questioned over the death.

The autopsy report has revealed Jong-nam was either poisoned with ricin or puffer fish toxins 1,200 times more lethal than cyanide, according to reports.

Ricin, a lethal chemical found in the seeds of castor oil plants, is considered a prime candidate for the poison, the Malaysia Star reported.

An alternative is tetrodotoxin, a lethal compound found in the liver of the puffer fish that can be 1,200 times more lethal than cyanide.

A North Korean official was pictured looking furious on Wednesday as a delegation failed to block the autopsy amid claims Jong-nam was trying to defect.

The secretive state’s stooges had spent hours in a stand-off with Malaysian officials trying to block the tests on Jong-nam’s body, sources revealed.

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